If valuation processes are dualistic in the sense that ethical values are given priority over instrumental values, and if old-growth forests are considered to be valuable in their own right, then the cost-benefits approach to valuing old growth is inappropriate. If this is the case, then ethical standards must be used to determine whether preservation is the correct policy when human material needs and ecosystem preservation are in conflict. Such a standard is suggested and evaluated in the context of (...) the policy debate over the preservation of spotted owl habitat in the Pacific Northwest region of the U.S. (shrink)

Monetary valuation of ecosystem services is a widely used approach to quantify the benefits supplied by the natural environment to society. An alternative approach is the monetary valuation of ecosystem functions, which is defined as the capacity of the ecosystem to supply services. Using two European case-study areas, this paper explores the relative advantages of the two valuation approaches. This is done using a conceptual analysis, a qualitative application, and an overall comparison of both approaches. It is (...) concluded that both approaches can be defended on theoretical grounds, and – if properly applied – will provide the same value estimates. However, valuation of ecosystem services is preferred from a practical point of view. Because there is no one-to-one match between functions and services, researchers should be consistent in their valuation approach. To avoid overlooking or overlapping of values, valuation should either be solely based on functions, or solely based on services. (shrink)

Economic environmental valuation remains a much debated and contested issue. Concerns have been voiced that it is unable to capture the manifold immaterial values of ecosystems due to conceptual and methodological issues. Thus, additional value categories (social values) as well as novel valuation approaches like deliberative (monetary) valuation are areas of growing interest, yet the theoretical foundations are rather weak. Against this background, this article aims to develop a consistent conceptual framework for making sense of social (...) values in economic environmental valuation. Based on a holistic view of society and individuals, the role of institutions, the social environment, culture and transcendental values is emphasised. To synthesise diverging concepts of value into an economic concept and to account for the multidimensionality of social values, the framework consists of three spheres: social, natural and contextual. The novel framework demonstrates that social values may be integrated into a preference-based utility framework when denoting a holistic understanding of social preferences and human embeddedness in nature and society. (shrink)

Researchers working in the field of ecosystem services (ES) have long acknowledged the importance of recognising multiple values in ecosystems and biodiversity. Yet the operationalisation of value pluralism in ES assessments remains largely elusive. The aim of this research is to present a taxonomy of values and valuation methods to widen the evaluative space for ES. First, we present our preanalytic positions in regards to the values and valuation of ES. Second, we review different value definitions that (...) we deem relevant for the discussion of ES valuation. Third, we propose a taxonomy of ES values based on different conceptions of human–nature relationships. Finally, we present a taxonomy of different methods that can be used to recognise plural values in ES. This taxonomy for a plural valuation can help ES scientists and practitioners with their aim of representing people's multiple and context-specific ways of valuing nature. The taxonomy can also serve to pay broader attention to ES values that are overlooked or misrepresented in assessments that restrict their focus to monetary valuations. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Future Environmental Philosophies and Their Biocultural Conservation InterfacesRicardo Rozzi (bio)Perhaps it would be better to speak of the future of environmental philosophies, rather than of the future of environmental philosophy. Making explicit a plurality of future trends helps prevent an "Anglo-academic" bias, and emphasizes the need for further developing environmental philosophy into at least two directions: (1) a stronger dialogical interaction with the diverse international constellation of cultural, ethnic, (...) social, political, economic, and ecological dimensions of environmental problems; and (2) a greater integration into the transdisciplinary field of biological and cultural conservation, involving an enhanced actualization of environmental theoretical philosophy into environmental practical philosophy.1. Toward more multi-discursive international environmental philosophiesFurther developing international environmental philosophy can help [End Page 142] to more precisely identify agents and causes of environmental problems, as well as their effects and victims. For instance, the focus on global climate change—and more generally global change, including other processes of rapid environmental transformation such as biotic, linguistic, and cultural homogenization—should not overlook the fact that different human communities, regions, societies, and countries are not equally responsible for such change nor suffer equally from its consequences. For example, today the highest levels of UV radiation fall on areas of Patagonia and the Antarctic Peninsula. These regions are the farthest away from the centers of CFC emissions which generate the stratospheric ozone hole found over the austral portion of the Americas.1 The incorporation of these type of regional distinctions into environmental philosophy provides the opportunity for more precise diagnoses and characterizations of environmental problems than the still-frequent generalizations stated in terms of problems between "humanity and nature."2 Such a lack of specificity is deceptive because it absolves particular responsible agents of environmental problems by referring to all humans or society in general as responsible for them.Secondly, contrasting ecological, social, and political settings generate not only different environmental problems, but also offer a variety of viable options for solving those problems. This is a point that remains frequently overlooked within global environmental agendas. While working in conservation in Latin America, I am continuously surprised by the marked ecological and cultural singularities I find in different localities in which communities have evolved peculiar ways of understanding, valuing, and interacting with their environments.3 On the one hand, environmental philosophy would enrich itself by further incorporating this biocultural diversity. On the other hand, environmental philosophy could provide a valuable contribution to biocultural conservation by better articulating the understanding the reticulate diversity of ecological knowledge and practices that indigenous and non-indigenous old-resident communities have co-evolved with particular ecosystems and historic and cultural settings around the world.Finally, furthering the participation of environmental thinkers of different regions and strengthening environmental philosophy networks could contribute to an international dialogue that would generate more pertinent concepts and propositions by more deeply embracing local [End Page 143] social, historical, political, cultural, linguistic, and ecosystem realities. The dynamic diversity of human ecological worldviews and practices has been addressed by the field of environmental philosophy;4 however, this diversity has still not been sufficiently incorporated as part of a multi-discursive community.* * *2. Incorporating environmental philosophy into the theory and praxis of biocultural conservationDuring the last two decades, a main goal of ecological sciences and biological conservation has been a better integration between human and natural systems. Under currently prevailing scientific approaches, such reconnection has been developed primarily through economic valuation of "ecosystem services" (see, for example, the recent landmark Millennium Ecosystem Assessment).5 Environmental philosophy has had a weak presence as compared to ecological economics in the transdiscipline of biological conservation. This weak presence is mismatched with the numerous calls made by ecologists about the need for environmental ethics, and with the frequent reference to ethical values made by international environmental conventions. For instance, the text of the Convention on Biological Diversity begins with a reference to the intrinsic value of biodiversity but it does not develop this notion at all.6 Similarly, the Millennium Ecosystem Assessment mentions the intrinsic value of biodiversity but does not develop the notion, and ends up justifying the need for its conservation in terms of economic values... (shrink)

In this paper, I discuss the concept of adaptive rationality. I present a simple model of ecology and the set of decision rules. The basic structure of the process of cognitive adaptation to ecology is described as a structure comprising perceptual space, a function valuating perceived items, a set of available decision rules and the adaptation process - identification and selection of the best strategies in given ecological conditions. The presented model of ecosystem allows a conclusion that completely opposite strategies (...) may be compatible with the assumption of adaptive rationality. (shrink)

This paper examines technical, ethical and ecological science perspectives on environmental valuation, and discusses problems in terms of the implications for practical policy -making. It suggests that all these perspectives raise legitimate concerns about the use of stated preference methods, but concludes that such methods still have a role to play in policy making for nature conservation provided they are applied in the right circumstances, designed very carefully, and used in conjunction with other decision-making tools.

Quantitative information is one of the means used to interface science with policy. As a consequence, much effort is invested in producing quantitative information for policy and much criticism is directed toward the use of numbers in policy. In this paper, I analyze five approaches drawn from such criticisms and propose alternative uses of quantitative information for governance: valuation of ecosystem services, social multicriteria evaluation, quantification of uncertainty through the Numeral, Unit, Spread, Assessment, Pedigree approach, Quantitative Story-Telling, and the (...) heuristic use of statistics. The analysis shows the varied ways that numbers are conceptualized and how different conceptualizations matter for the science–policy interface. Alternative conceptualizations of numbers are used to challenge the model of science-speaking truth to power. Uncertainty, complexity, pluralism, malpractice, and values are mobilized to redefine the relations between science and policy. Alternative quantification may produce alternative facts, but reflexive approaches that use numbers to discuss the relevance of equity, positionality, and quality in science for policy may offer a remedy. (shrink)

In the context of understanding Nature's Contribution to People, this article explores the Mapuche value system and its contributions to living well by conserving nature. Through the context-specific approach, the findings shows that the Mapuche Az-Mapu is important for bio-cultural conservation in Chile. Deepening understanding of the distinct Mapuche value system shows the importance of rights and sovereignty for other coastal stateless nations who are enhancing bio-cultural conservation around the world. The article explores the importance of maintaining Mapuche values in (...) the context of Indigenous Marine Areas in Chile and linking to land-based rights. This research makes use of semi structured interviews and intercultural dialogue among the authors, to understand how traditional Mapuche concepts under the framework of Az-Mapu, are continued today in local marine conservation and other ecosystems. In this context, we ask how well these eudemonic relational values resonate with Mapuche values of nature. This article shows that rights for the marine environment can be expanded to additionally allow indigenous communities safeguard wetlands, lakes and forests which are indivisible under Az-Mapu. Greater recognition of this different form of valuation can better account for the dynamic relations between individuals, cultures, and ecosystems, as well as showing the importance in allowing indigenous communities to take back control of conservation under their own terms. (shrink)

Values, Valuations, and Axiological Norms in Richard Rorty's Neopragmatism sympathetically discusses Richard Rorty's neopragmatist philosophy. This book brings together a range of interpretations and possibilities on a variety of humanistic topics, including philosophy, literature, culture, film, economics, social issues, politics, and more. Skowroński involves the work of philosophers such as Kant, Dewey, Santayana, and Kołakowski as he delves into various philosophical problems using the lens of Rorty’s neopragmatist thought.

Some ecologists, philosophers, and policy analysts believe that ecosystem health can be defined in a rigorous way and employed as a management goal in environmental policy. The idea of ecosystem health may have something to recommend it as part of a rhetorical strategy, but I am dubious about its utility as a technical term in environmental policy. I develop several objections to this latest version of scientism in environmental policy, and conclude that our environmental problems fundamentally involve problems in our (...) institutions of governance, our systems of value, and our ways of knowing. These are the problems that most need to be addressed. (shrink)

The article is devoted to the study of the history of the "innovation ecosystem" concept formation and provides a simplified schematic representation of the system as five interacting modules. Innovations are assumed by national governments and companies as a source of long-term sustainability. In the past decade, there has been an increased interest in identifying approaches that would accelerate the development and deployment of innovations. The attention of the academic and business communities representatives to the innovation ecosystems underlines the (...) fact that it is ecosystems and IT platforms that implement them that are the most promising candidates for the role of an organizational structure for the accumulation and scaling of new knowledge in the era of the industrial revolution. (shrink)

Arthur Tansley first defined the term ecosystem in his seminal work “Use and Abuse of Vegetational Concepts,” as an improved way of viewing the relationships between plants and their physical environments. However, his definition, while widely influential, privileges the living components over nonliving components of ecosystems, and has thus been unable to fully overcome the biocentrism of early plant ecologists. Moreover, the binary between life and nonlife is untenable, and serves only as a marker of the underlying biocentric values (...) of a researcher. Drawing from Donna Haraway’s argument for situated knowledges, one can critically examine the biocentrism implicit in much of ecology, and reconsider our definition of ecosystem in order to highlight our devaluation of the nonliving, and expand our normative universe. (shrink)

The notion of a spontaneous order has a long history in the philosophy of economics, where it has been used to advance a view of markets as complex networks of information that no single mind can apprehend. Traditionally, the impossibility of grasping all of the information present in the spontaneous order of the market has been invoked as grounds for not subjecting markets to central planning. A less noted feature of the spontaneous order concept is that when it is applied (...) to ecosystems it yields a reasonably strong environmental ethic. Thinking of ecosystems as spontaneous orders generates a presumption against interfering with their natural functioning in a manner that results in anthropogenic species loss. Such a presumption will permit some interventions in nature while precluding others. Environmental ethics could potentially make valuable use of the spontaneous order idea, without necessarily endorsing its traditional application to markets. (shrink)

This paper reports a Contingent Valuation application to estimate the non-market costs and benefits of hydro scheme developments in an Icelandic wilderness area. A deliberative group -based approach, called Market Stall, is compared to a control group consisting of conventional in-person interviews, in order to investigate flaws of Contingent Valuation, such as poor validity and protest responses. Perceived property rights suggested the use of willingness-to-accept in compensation for wilderness loss and willingness-to-pay for hydro scheme benefits. The study is (...) novel as it applies participant behaviour observation to gain insights into the shortcomings of conventional data collection modes. Main drawbacks with in-person interviews were found to be low motivation, standardised information and time pressure which hindered individuals from carefully considering their preferences. Market Stall performed better in the study: welfare estimates were more easily explained by socio-economic variables, the non-response rate was lower, and respondents were more engaged. Our research findings also suggest that participant behaviour can be used to supplement conventional validity tests. (shrink)

There is considerable discussion about the nature of the health metaphor as applied to ecosystems. One does not need to accept the analogy of ecosystem as 'organism' to reap insight into the diagnosis of ecosystem ills by applications of approaches pioneered in the health sciences. Ecosystem health can be assessed by the presence or absence of signs ecosystem distress, by direct measures of ecosystem resilience or counteractive capacity, and by evaluation of risks or threats from human activity and natural (...) forces which may decrease the supply of ecological services. The focus of this essay is on what is and what is not implied by the ecosystem health metaphor. It also elaborates a research agenda for this emerging transdiciplinary science. One can argue that beyond the metaphor is the potential for systematic diagnosis of ecosystem ills, development of indicators of ecosystem health, development of early warning indicators of ecosystem dysfunction, development of diagnostic protocols and preventive strategies for maintaining ecological services. (shrink)

This paper considers some issues to do with valuational presentations of consequence relations, and the Galois connections between spaces of valuations and spaces of consequence relations. Some of what we present is known, and some even well-known; but much is new. The aim is a systematic overview of a range of results applicable to nonreflexive and nontransitive logics, as well as more familiar logics. We conclude by considering some connectives suggested by this approach.

Ecosystems services are provisions that humans derive from nature. Ecologists trying to value ecosystems have proposed five categories of these services: preserving, supporting, provisioning, regulating and cultural. While this ecosystem services framework attributes 'material' value to nature, sacred natural sites are areas of 'non-material' spiritual significance to people. Can we reconcile the material and non-material values? Ancient classical traditions recognise five elements of nature: earth, water, air, fire and ether. This commentary demonstrates that the perceived properties of these (...) elements correspond with the ecosystem services framework. Whilst the two can be reconciled, the 'elements of nature' framework is argued to be more suitable to make a case for conservation of sacred natural sites because it can be attractive to traditional societies whilst being acceptable to Western science. (shrink)

Valuation is portrayed here as a dynamic and interactive process, not a static notion linked to willingness to pay. Valuation through economic measures can be built upon by creating trusting and legitimising procedures of stakeholder negotiation and mediation. This is a familiar practice in the US, but it is only beginning to be recognised as an environmental management tool in the UK. The introduction of strategic environmental and landuse appraisal plans for shorelines, estuaries, river catchments and rural landscapes, (...) combined with the mobilisation of protest around landuse proposals that are not seemingly justified on the basis of 'need' suggest that a more legitimate participatory form of democracy is required to reveal valuation through consensual negotiation. (shrink)

생태계의 발전(Ecosystem Development)은 생태계가 연속적으로 이어지는 것을 의미하며 이것은 생태계가 내․외적인 변화에도 항상 반응하면서 안정을 유지하는 것을 의미한다. 한편 역동적인 균형(Dynamic Equilibrium)이란 생태계의 유기체들(organisms)이 시간이 변함에 따라서 잎이 지고 새싹이 나며 새로운 세대(new generations)가 나타나게 되는 것이나 시절에 따라 온도가 오르거나 내려가는 등의 현상들을 말한다. 이러한 생태계의 발전과 역동적인 균형은 바로 생태계의 연속을 의미하며, 생태계가 계속적인 삶을 유지하는 것을 의미한다. 즉, 생태계의 존속은 바로 자연환경의 유지와 발전을 의미한다. 본 논문은 생태계의 발전과 역동적인 균형을 위해서 보다 실천적이며, 생태계의 실제적인 발전과 역동적인 (...) 균형에 긍정적인 환경윤리의 탐구가 중요하다는 데에 관심을 가지고 접근했다. 전통적인 일원론적, 또는 이원론적인 도덕원리를 가지고는 늘 자연생태계가 인간의 목적에 의해 정복되는 생태계를 상정하게 되기에 문제가 있다는 지적이다. 따라서 도덕적인 다원론적 입장을 반영한 환경윤리가 정립되어야 한다는 입장이다. 즉, 인간도 생태계의 구성요소중의 하나일 뿐이라는 생태윤리학적 인식이 절대적으로 필요하다는 입장이다. 이를 위해서는 생태계에 대한 더욱 현실적인 연구와 아울러, 생태계의 발전과 역동적인 균형에 더욱 관심을 둔 생태윤리가 준비되어야 하고, 이에 근거한 교육이 필요 하다는 입장이다. (shrink)

Biologists employ a suggestive metaphor to describe the complexities of molecular interactions within cells and embryos: cytological components are said to be part of “ecosystems” that integrate them in a complex network of relations with many other entities. The aim of this essay is to scrutinize the molecular ecosystem, a metaphor that, despite its longstanding history, has seldom be articulated in detail. I begin by analyzing some relevant analogies between the cellular environment and the biosphere. Next, I discuss the (...) applicability of the molecular ecosystem concept in actual scientific practice. (shrink)

We are all aware that many people can easily combine general moral understandings that make unprovoked violence inexcusable, with tolerance or even support for that same behavior when it is carried...

Jonathan Newman, Gary Varner, and Stefan Linquist’s Defending Biodiversity: Environmental Science and Ethics is a critical examination of a panoply of arguments for conserving biodiversity. Their discussion is extremely impressive though I think one can push back on some of their criticisms. In this essay, I consider their criticisms of the argument for conserving biodiversity based on ecosystem services; specifically, ecosystem functioning. In the end, I try to clarify and defend this argument against their criticisms.

On most understandings of what an ecosystem is, it is a kind of thing that can be literally, not just metaphorically, healthy or unhealthy. Health is best understood as a kind of well-being; a thing’s health is a matter of retaining those structures and functions that are good for it. While it is true both that what’s good for an ecosystem depends on how we define the system and that how we define the system depends on our interests, these facts (...) do not force us to the conclusion that an ecosystem has no good of its own. Ecosystems and persons can have goods of their own in spite of the fact that the schemes we use to categorize them are matters that we decide upon. (shrink)

Market-like devices that enact quantification and monetization processes (QM) underpin a growing number of valuation practices, but the widespread take-up of QM has given rise to the ‘cooptation charge’: for all the good intentions and results produced by those who deploy QM, they are complicit in reinforcing problematic neoliberal tendencies. A political discourse-theoretical perspective, combined with a pragmatist scholarship that has made significant advances in our understanding of QM, suggests that the cooptation charge relies on an overly simplified picture (...) of both QM and neoliberalism. However, while we acknowledge this as an important advance, we argue that the normative, political, and ideological significance of QM remains surprisingly underspecified. We still lack a convincing theoretical framework that provides a more rounded multi-dimensional critical perspective within which to navigate the evaluative dilemmas produced by these increasingly widespread techniques, including cooptation worries. Drawing on the logics approach of the Essex school of political discourse theory, we develop a framework that brings together the strategic, normative, and ideological dimensions that otherwise tend to be treated separately in the literature, allowing a fuller assessment of such technologies. (shrink)

I propose an ecologically attuned criterion for genuine virtue, namely, the criterion of ecosustainable virtue: a genuine virtue includes the goal of ensuring ecosystem sustainability. I show how this criterion emerges from environmental practice and how it can be supported by syllogistic reasoning.

The Intergovernmental Platform on Biodiversity and Ecosystem Services have recently launched themselves as the UN-sanctioned instrument for conserving nature. They seek to establish themselves as the authority in this field alongside the well-known Intergovernmental Panel on Climate Change in climate science. Quickly following or even before recent publication of their conceptual framework in two biology journals, they were already underway building upon it. This headlong push, we believe, is ill advised. We show how the framework is unsound as a foundation (...) for further work—in a number of ways and perhaps even by its authors’ own lights. It is therefore urgent that the IPBES thoroughly and thoughtfully reconsider their framework before too much effort is wasted. (shrink)

We study the algebraic implications of the non-independence property and variants thereof on infinite fields, motivated by the conjecture that all such fields which are neither real closed nor separably closed admit a henselian valuation. Our results mainly focus on Hahn fields and build up on Will Johnson’s “The canonical topology on dp-minimal fields” :1850007, 2018).

Some ecologists and philosophers have tried to develop a concept of ecosystem health that would support a more 'objective' means of evaluating an ecosystem. I argue (following Dale Jamieson) that the concept of health is itself too subjective to justify such an attempt, and then suggest that part of the problem is that the goal of achieving greater objectivity is itself unclear. I analyse and evaluate three different ways of drawing the distinction between subjective and objective evaluations as a first (...) step towards clarifying that goal. (shrink)

This article aims to uncover the processes of developing sustainable business models in innovation ecosystems. Innovation ecosystems with sustainability goals often consist of cross-sector partners and need to manage three tensions: the tension of value creation versus value capture, the tension of mutual value versus individual value, and the tension of gaining value versus losing value. The fact that these tensions affect all actors differently makes the process of developing a sustainable business model challenging. Based on a study (...) of four sustainably innovative cross-sector collaborations, we propose that innovation ecosystems that develop a sustainable business model engage in a process of valuing value in which they search for a result that satisfies all actors. We find two different patterns of valuing value: collective orchestration and continuous search. We describe these patterns and the conditions that give rise to them. The identification of the two patterns opens up a research agenda that can shed further light on the conditions that need to be in place in order for an innovation ecosystem to develop effective sustainable business models. For practice, our findings show how cross-sector actors in innovation ecosystems may collaborate when developing a business model around emerging sustainability-oriented innovations. (shrink)

In this paper, the author revisits “the emotive theory of value” and argues that values are not entities but nothing other than “linguistic fictions”. Accordingly, valuations—i.e., valuing actions—can be defined as approving or disapproving attitudes of a subject to some object. In this perspective, values cannot be true or false: What we can do is just compare them with regard to strength. As a consequence, value judgments are to be understood as sentences which are used either to say that a (...) subject s values an object o positively or negatively, or to express (evince) a valuation. The author then shows some relations between normative and evaluative discourses. First, he claims that norms as well as valuations are not true or false. Second, he argues that both may be explained or justified, even if the former are usually justified teleologically whereas the latter are explained referring back to the subject's background and life‐style. Third, he notes that a legal order originates from the fact that valuations “crystallize” into norms. Finally, the author examines some further questions related to his analysis. In particular, he argues that the different realms of values, e.g., morals, aesthetics, politics, etc., do not correspond to different evaluative attitudes, but to different phenomena and diverse spheres of human life. (shrink)

Appeals to science as a help in constructing policy on complex issues often assume that science has relatively clear-cut, univocal answers. That is not so today in the environmentally crucial fields of ecology and evolutionary biology. The social role of science has been as a source of information to be used in the prediction and domination of nature. Its perspectives are finely honed for such purposes. However, other more conscientious perspectives are now appearing within science, and we provide an example (...) here in rebuttal to the claim that there is no warrant from within ecology for ecosystem moral considerability. (shrink)

This expository paper presents an application, to the modal logic S4, of the valuation semantics technique proposed by Loparić for the basic normal modal logic K. In previous works we presented a valuation semantics for the minimal temporal logic Kt and several other systems modal and temporal logic. How to deal with S4, however, was left as an open problem—although we arrived at a working definition of \(A_1,\ldots,A_n\) -valuations, we were not able to prove an important lemma for (...) correctness. In this paper we solve this, presenting valuations for S4. (shrink)

This study attempts to fill in two research gaps in the extant literature concerning the ecosystem for social innovation in the context of emerging market economies such as India. The study first attempts to assess the potential of corporate social responsibility (CSR) in not-for-profit entities such as technology business incubators (TBIs) to stimulate social innovations in the prevalent ecosystems in emerging markets. Further, using a random-effects Tobit model, the study examines the characteristics of firms that spend higher percentages of (...) CSR expenditure on not-for-profit TBIs/societies/trusts in India. The study provides policy suggestions to create an entrepreneurial ecosystem for promoting social innovation in emerging markets such as India. (shrink)

The world contains many different types of ecosystems. This is something of a commonplace in biology and conservation science. But there has been little attention to the question of whether such ecosystem types enjoy a degree of objectivity—whether they might be natural kinds. I argue that traditional accounts of natural kinds that emphasize nomic or causal–mechanistic dimensions of “kindhood” are ill-equipped to accommodate presumptive ecosystemic kinds. In particular, unlike many other kinds, ecosystemic kinds are “anchored” to the contingent character (...) of species and higher taxa and their abiotic environments. Drawing on Slater (Br J Philos Sci 66(2):375–411, 2015a), I show how we can nevertheless make room for such contingent anchoring in an account of natural kinds of ecosystems kinds. (shrink)

Economics takes an individualistic approach to human behaviour. This is reflected in the use of ‘contingent valuation’ surveys to conduct cost benefit analysis for economic policy evaluation. An individual's valuation of a policy is assumed to be unaffected by the burdens it places on others. We report a survey experiment to test this supposition in the context of climate change policy. Willingness to pay for climate change mitigation was higher when richer individuals were to bear higher costs than (...) when, as is usual, no explicit information was provided about cost distribution. This result is inconsistent with the usual interpretation of contingent valuation data. It also suggests that the data may be biased indicators of policy acceptance. Additional survey questions suggest that a collective mode of reasoning is common. (shrink)

This paper introduces valuation structures associated with preferential models. Based on KLM valuation structures, we present a canonical approach to obtain injective preferential models for any preferential relation satisfying the property INJ, and give uniform proofs of representation theorems for injective preferential relations appeared in the literature. In particular, we show that, in any propositional language (finite or infinite), a preferential inference relation satisfies INJ if and only if it can be represented by a standard preferential model. This (...) conclusion generalizes the result obtained by Freund. In addition, we prove that, when the language is finite, our framework is sufficient to establish a representation theorem for any injective relation. (shrink)

This paper uses the notion of Galois-connection to examine the relation between valuation-spaces and logics. Every valuation-space gives rise to a logic, and every logic gives rise to a valuation space, where the resulting pair of functions form a Galois-connection, and the composite functions are closure-operators. A valuation-space (resp., logic) is said to be complete precisely if it is Galois-closed. Two theorems are proven. A logic is complete if and only if it is reflexive and transitive. (...) A valuation-space is complete if and only if it is closed under formation of super-valuations. (shrink)